Apparatuses and methods for refreshing memories with redundancy
US11152078B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2020 |
| Grant date | Oct 19, 2021 |
| Priority date | — |
| Expiry date | Aug 28, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2029/1202
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of the disclosure are drawn to apparatuses methods for checking redundancy information for row addresses prior to performing various refresh operations, such as auto refresh and targeted refresh operations. In some examples, refresh operations may be multi pump refresh operations. In some examples, a targeted refresh operation may be performed prior to an auto refresh operation responsive to a multi pump refresh operation. In some examples, redundancy information for the auto refresh operation may be performed, at least in part, during the targeted refresh operation. In some examples, refresh operations on word lines may be skipped when the redundancy information indicates the word line is defective or unused.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.